Earlier quoted context omitted.
The keto diet is a low fiber high saturated fat intake diet. The effects of low fiber consumption and high intake of saturated fat are well established, and they certainly aren't inflammation reducers. Also, fasting is not without risks.
Keto is a low carb high fat diet. With keto you can have as much fibre as you like as long as it's not paired with carbs.
Plants, which are extremely high in carbs, are where fiber comes from.
High intake of saturated fat is associated with heart disease.